Pet Health

Haemorrhagic gastro-enteritis (HGE) in dogs and cats

Learn about Haemorrhagic Gastro-enteritis (HGE) in dogs and cats, its symptoms, treatment options, and prevention tips to keep your furry friends healthy!
Author: Veterinary Team
Dial A Vet
Updated
June 6, 2025
|
Published
June 6, 2025
Veterinarian examining a dog showing symptoms of haemorrhagic gastro-enteritis with a concerned pet owner in a clinic setting.

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Seeing your beloved dog or cat suddenly experience vomiting or bloody diarrhea is alarming, to say the least. Haemorrhagic gastroenteritis (HGE) is a serious condition that can affect both dogs and cats, leaving pet owners feeling helpless. The good news? With prompt care, most pets recover fully. Let’s break down what HGE is, how to recognize it, and what steps you can take to protect your furry friend.

⚠️ What to Watch For

HGE can strike suddenly, with little to no warning. The most common signs of this condition include:

  • Vomiting, often severe
  • Profuse diarrhea that may contain blood
  • Dehydration due to fluid loss
  • Lethargy or a sudden drop in energy levels
  • Loss of appetite
  • Abdominal discomfort or pain

While bloody diarrhea is a hallmark symptom of HGE, it’s important to note that not all cases include visible blood. Some pets may also show signs of shock, such as pale gums, rapid heart rate, or difficulty breathing. If you notice any of these symptoms, it’s crucial to act quickly.

🔍 Possible Causes

The exact cause of HGE isn’t always clear, but veterinarians suspect it’s often triggered by factors like:

  • Bacterial infections, such as Clostridium perfringens
  • Dietary indiscretion (eating spoiled food, garbage, or toxins)
  • Stress or sudden lifestyle changes
  • Underlying medical conditions, such as pancreatitis
  • Parasites or viral infections

Small-breed dogs, such as Miniature Schnauzers, Yorkshire Terriers, and Toy Poodles, seem to be more prone to HGE. While it’s less common in cats, it can still occur, especially in those with pre-existing health conditions or high stress levels.

✅ What You Can Do at Home

If your pet shows mild symptoms of gastrointestinal upset, such as soft stools or occasional vomiting, you can take these steps to support their recovery:

  • Withhold food for 12–24 hours to allow the digestive system to rest.
  • Provide fresh water or an electrolyte solution to prevent dehydration.
  • Feed a bland diet, such as boiled chicken and plain rice, for a few days.
  • Monitor their symptoms closely for any signs of worsening.

However, if you notice bloody diarrhea, persistent vomiting, or signs of dehydration, it’s best to seek veterinary care immediately. HGE can progress rapidly, and delaying treatment could put your pet’s life at risk.

💡 When to Call a Vet

HGE is a medical emergency that often requires professional intervention. Contact a vet right away if your dog or cat shows any of the following:

  • Severe or frequent vomiting
  • Diarrhea with visible blood
  • Dry gums, sunken eyes, or other signs of dehydration
  • Collapse or unresponsiveness
  • Abdominal swelling or pain

In most cases, treatment involves hospitalization for IV fluids to rehydrate your pet and restore electrolyte balance. Your vet may also administer medications to control vomiting, diarrhea, or bacterial infections, depending on the cause.

According to VCA Animal Hospitals, pets treated promptly for HGE often recover within a few days (source).

FAQs

Q: Can HGE be prevented?
A: While you can’t always prevent HGE, you can reduce the risk by feeding your pet a high-quality diet, avoiding table scraps, and keeping them away from garbage or toxins. Regular vet check-ups can also help catch underlying issues early.

Q: How serious is HGE?
A: HGE can be life-threatening if left untreated due to rapid dehydration and potential complications. However, with prompt veterinary care, most pets make a full recovery.

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References

While every effort is made to ensure the accuracy of this content - including vet review where applicable - this article is for informational purposes only and is not a substitute for professional veterinary advice, diagnosis, or treatment. If your pet is unwell or you are concerned, please speak with a licensed veterinarian. You can book a $49 online consultation with our veterinary team  😄
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